It's very unlikely a Warrior will get a 'bad' opener. Warriors can also stop Warlock gates which can be huge. Feral Druids have the potential to get AoE'd out (no subterfuge) and not get an opener at all. Not saying one is better than the other, it's just not as easy as putting feral druid down as a pro and warrior down as a con. They are both good in their own ways.
Second Point (Burst):
Warrior burst is farrrrrrrrr more devastating than Feral burst. It's way higher in terms of damage, skull banner also provides a benefit for your team and it's far easier just to press your 1shot and slam twice than it is to press your incarnation/berserk macro and have slightly increased damage over a 10~ second period. I've popped feral CDs into a target who's in a 5 second stun with CC on their healer and have them leave with more health than they started, the burst really isn't there. Also, another point to make, Warriors have a fear break and a magic reflect - this gives them 2 'immunities' to have as backup when popping CDs. They may be susceptible to Polymorph, but unless the Mage PoMs it, it's pretty easy to stop.. making Feral CDs much easier to peel.
Third Point (Difficulty):
Difficulty shouldn't really be taken into account when balancing, but i'd say Feral and Warrior aren't that different anymore. Feral has lost a lot of it's difficulty since Wrath/Cata times, and now we've lost instant clone it's lost pretty much all of it's skillcap. If you're able to keep track of 3 timers Feral is simple as shit.
Seventh Point (CC):
Ferals have hardly any CC, like, at all. One of the lowest CC classes in the game. It's the biggest con about Feral right now. Warriors have slightly more than Feral but have way more utility. Feral should definitely be in con here.
11th Point (Sustained Dmg):
Warrior is wayyy higher here. Deep Wounds does almost as much as both Rip and Rake added together, and Warriors hit like a truck on top of that.
These are the major ones where you're wrong, in the other ones I either agree or it's a minor mistake. The main point overall is that Warriors bring stuns, utility, huge damage and massive burst. Ferals bring .......................................... immunity to roots, slows and polymorph, and a hex/wyvern dispel.. that's about it. Everything else Warriors do better.
Doesnt get more Bias than this.